Liquid-displacement apparatus



E. F. McCARTHY.

LIQUID DISPLACEMENT APPARATUS. APPLICATION FILED Aue.25, 1919.

Patented Mar. 8, 1921.

2 SHEETS-SHEET I.

v E. nmccmmn LIQUID DISPLACEMENT APPARATUS.

APPLICATION FILED AUG-25,1919.

java/2Z5?" UNITED STATES} PATENT OFFICE.

EDWARD I. MCCARTHY, OF CHICAGO, ILLINOIS, ASSIGNOR TO VACUUM MACHINERY 00., OF MABINETTE, WISCONSIN, A CORPORATION OF WISCONSIN.

LIQUID-DISPLACEMENT APPARATUS. 1

Specification of Letters Patent.

Patented Mar. 8. 1921.

'7' 0 all whom it may concern:

Be it known that I, EDWARD F. MCCARTHY, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Liquid-Displacement Apparatus, of which the following is a specification.

This invention relates to improvements in liquid displacement apparatus particularly adapted, though not necessarily limited in its use for creating a suction or pressure, and one of the objects of the invention is to provide an improved apparatus of this character wherein a liquid is employed as the displacement medium in which the full kinetic energy imparted to the displacement liquid is employed to move another fluid. This result is obtained through the medium of centrifugal force created by a rotor orrotary element, t1 element being so designed that the fluids are introduced axially thereinto and set in circumferential action with a minimum amount of shock. and discharged at the periphery of the rotary element into large passageways, thereby minimizing the peripheral friction.

To the attainment of these ends and the accomplishment of other new and useful objects as will appear, the invention consists in the features of novelty in substantially the construction, combination and arrangement of the several parts hereinafter more fully described and claimed and shown in the accompanying drawings illustrating this invention, and in which:

Figure 1 is a vertical sectional view as taken on line 11, Fig. 3 of an apparatus of this character constructed in accordance with the principles of this invention.

Fig. 2 is a top plan view partly broken awa of the rotor.

Fig. 3 is a vertical sectional view taken on line 33, Fig. 1.

Fig. 1 is a top plan view of the fluid inlet port or post.

Fig. 5 is a side elevation of Fig. 4.

Fig. 6 is an end elevation of the rotor.

Referring more particularly to the drawing the numeral 10 designates generally a casing provided with a volute chamber 11 therein having a liquid inletopening 12 and a discharge outlet opening 13. The casing may be formed in any suitable manner but preferably in sections secured together by suitable fastening devices 14.

Arranged within the casing is a post or element 15 having passages 16 therein and this element 15 may be secured in position in any suitable manner. The inlet openings 17 of the passages 16 communicate with a chamber or passage 18 in the wall of the casing or chamber so that fluid which enters the passage 18 from any suitable source will be delivered into the passages 16 and from there discharged through the outlets 20 in a manner to be hereinafter set forth.

A shaft 21 extends through the chamber and passes through suitable stuffing boxes 22 and is journaled in suitable bearings 23, the shaft being preferably provided with a clutch or coupling member 24 by means of which latter it may be connected with any suitable source of power to rotate the shaft.

Connected with the shaft within the chamher and to rotate with the shaft is a rotor 25 which is preferably provided with a laterally projecting portion 26 which extends over the inner end of the element 15 to encompass the latter and rotate thereabout. Connected with the rotor 25 are a series of blades or impellers 2728 the latter of which are arranged adjacent the periphery of the rotor and both sets rotate about the element 15 when motion is imparted to the rotor. These blades 27 are arranged so as to form ports or passages 29 therebetween. The outlets 20 of the element 15 are arranged adjacent the path of movement of the inlet ends of the ports or passages 29 of the rotor while the discharge outlet ends of the ports or passages 29 are arranged within and spaced from the outer'series of blades 28 so that as the rotor is rotated, the liquid which enters the chamber 10 through the inlet 12 will be caught within the passages 29 and will be picked up without shock and delivered to the outer series of blades 28, which latter are arranged adj acent the periphery of the rotor and operate to rapidly set the fluids in circumferential motion and expel the fiuids from the rotor or impeller with great velocity. With this construction the fluids are picked up by the inner sets of blades 27 which move tierethrough without shock, owing to the receding slant of the blades 27 and pass through the buckets of the impeller formed by the blades without meeting any external pressure at the periphery of the inner 1mpeller. This is due to the arrangement of the blades 28 forming an outer impeller which sets the fluid in circumferential mo-' tion, thereby expelling the fluids from the impeller or rotor with great VGlOCltY; As the inlet or suction ends of these passages 28 pass the discharge outlets 20 of the element 15, a suction will be manifested in the passages 16 and as the liquid moves outwardly through the passages 29, it will cause fluid to be drawn through the passages 16 and into the passages 29 to be discharged with the liquid into the volute chamber 11 from where the liquid and fluid will pass out of the chamber through the discharge outlet 13. The suction which is created by this operation in the passages 16 will be manifested in the conduit 19.

It will thus be manifest that the passages 29 during their rotation are alternately opened and closed first to the liquid and then to the fluid, and by the arrangement of the blades or impellers 27 in a manner as shown, the full kinetic energy imparted to the liquid will operate to move or displace another fiuid. By this arrangement also the fluid and liquid are introduced and set in a circumferential motion with a minimum amount of shock and are discharged at the periphery of the rotor into large passageways so as to minimize peripheralfriction.

Obviously many changes may be made in the details of construction and in the combination and arrangement of the several parts within the scope of the claims without departing from the spirit of this invention.

lVhat is claimed as new is 1. An apparatus of the character described embodying a casing having an inlet and an outlet for the liquid, a stationary post within the casing and provided with a plurality of discharge outlets within the casing and extending through the periphcry of the post, a rotor rotatable about the said post and having two series of concentrically arranged vanes forming ports therebetween, said series of vanes being spaced from each other, the inner ends of the inner series of vanes rotating in close proximity to the periphery of the post whereby the passages between the vanes will be automatically brought into communication with the passages through the post and whereby the said vanes will automatically take up a portion of the liquid and the gas, and means for rotating the rotor to discharge the liquid and gas by centrifugal force from the rotor.

2. An apparatus of the character described embodying a casing having an inlet and an outlet for the liquid, a stationary post within the casing and provided with a plurality of discharge outlets'within the casing and extending through the periphery of the post, a rotor rotatable about the said post and having two series of concentrically arranged vanes forming ports therebetween, said series of vanes being spaced from each other, the inner ends of the inner series of vanes rotating in close proximity to the periphery of the post whereby the passages between the vanes will be automatically brought into communication with the passages throu h the post and whereby the said vanes will automatically take up a portion of the liquid and the gas, means i for rotating the rotor to discharge the liquid and gas by centrifugal force from the rotor, and a partition dividing the easing into separate discharge passages, whereby the gas from predetermined openings in the post will be delivered into predetermined discharge passageways.

3. An apparatus of the character described embodying a casing having an inlet andan outlet for the liquid, a stationary post within the casing and provided with a plurality of discharge outlets within the casing and extending through the periphery of the post,a' rotor rotatable about said post and having an annular series of vanes, the

inner ends of which vanes rotate in close proximity to the periphery of the said post, whereby the passages between the vanes will be automatica'llybrought into communication with the passages through the post and whereby the said vanes will automatically take up a portion of the liquid and the gas directly from the passages in the post, means for rotating the rotor to discharge the liquid and gas by centrifugal force from the rotor, and a partition dividing the casing into separate discharge passages, whereb the gas from predetermined openings in the post will be delivered into predetermined discharge passageways.

In testimony whereof I have signed my name to this specification on this 22nd day of August, A. D. 1919.

' EDWARD F. MCCARTHY. 

